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authorStephan Mueller <smueller@chronox.de>2015-05-25 15:09:36 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2015-05-27 17:51:53 +0800
commit4c7879907eddd5b3ec09489bc980aab4f44e38dd (patch)
tree8d1c5d0b32e923d233b2ba66f0eb51d873e7a6ae /include/crypto
parent3d6a5f75d1340539dcdcec4609761fa4b836a1f2 (diff)
downloadlinux-4c7879907eddd5b3ec09489bc980aab4f44e38dd.tar.bz2
crypto: drbg - add async seeding operation
The async seeding operation is triggered during initalization right after the first non-blocking seeding is completed. As required by the asynchronous operation of random.c, a callback function is provided that is triggered by random.c once entropy is available. That callback function performs the actual seeding of the DRBG. CC: Andreas Steffen <andreas.steffen@strongswan.org> CC: Theodore Ts'o <tytso@mit.edu> CC: Sandy Harris <sandyinchina@gmail.com> Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/crypto')
-rw-r--r--include/crypto/drbg.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/crypto/drbg.h b/include/crypto/drbg.h
index b0526981aa85..46994b25dc85 100644
--- a/include/crypto/drbg.h
+++ b/include/crypto/drbg.h
@@ -51,6 +51,7 @@
#include <linux/fips.h>
#include <linux/mutex.h>
#include <linux/list.h>
+#include <linux/workqueue.h>
/*
* Concatenation Helper and string operation helper
@@ -119,6 +120,7 @@ struct drbg_state {
bool fips_primed; /* Continuous test primed? */
unsigned char *prev; /* FIPS 140-2 continuous test value */
#endif
+ struct work_struct seed_work; /* asynchronous seeding support */
u8 *seed_buf; /* buffer holding the seed */
size_t seed_buf_len;
const struct drbg_state_ops *d_ops;